抄録
A new compound (I), mp 184°, [α]23D+7.1°(c=1.0, CHCl3), was isolated from the terpenoid fraction of the benzene extract of the leaves of Acanthopanax sciadophylloides. I was hydrolyzed by alkali to yield taraxerol and a mixture of higher fatty acids. The acidic fraction was methylated without purification and examined by gas chromatography. The main components of the mixture were methyl stearate (15.6%), arachidate (38.2%), behenate (20.8%), and lignocerate (16.5%), accompanied by a small amount of methyl esters of higher normal saturated fatty acids of C21, C23, C25, C26, C28 and C30-. Taraxeryl stearate, arachidate, behenate, and lignocerate were synthesized from taraxerol and GLC- pure acids. IR spectra of the natural mixture and the synthesized pure compounds were almost identical but differed in the range of 1180-1350cm-1, as shown in Fig. 1 and 2.
